CA1128645A - Methode et systeme de transmission de signaux de telecopie - Google Patents

Methode et systeme de transmission de signaux de telecopie

Info

Publication number
CA1128645A
CA1128645A CA331,897A CA331897A CA1128645A CA 1128645 A CA1128645 A CA 1128645A CA 331897 A CA331897 A CA 331897A CA 1128645 A CA1128645 A CA 1128645A
Authority
CA
Canada
Prior art keywords
picture element
coding
information change
mode
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA331,897A
Other languages
English (en)
Inventor
Yasuhiro Yamazaki
Toyomichi Yamada
Kiyohiro Yuuki
Yasushi Wakahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KDDI Corp
NTT Inc
Original Assignee
Kokusai Denshin Denwa KK
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP53092533A external-priority patent/JPS5923514B2/ja
Priority claimed from JP15471678A external-priority patent/JPS5927544B2/ja
Priority claimed from JP603079A external-priority patent/JPS5599880A/ja
Application filed by Kokusai Denshin Denwa KK, Nippon Telegraph and Telephone Corp filed Critical Kokusai Denshin Denwa KK
Priority to CA000400498A priority Critical patent/CA1144274A/fr
Application granted granted Critical
Publication of CA1128645A publication Critical patent/CA1128645A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding
    • H04N1/4175—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding involving the encoding of tone transitions with respect to tone transitions in a reference line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Facsimile Image Signal Circuits (AREA)
CA331,897A 1978-07-31 1979-07-16 Methode et systeme de transmission de signaux de telecopie Expired CA1128645A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000400498A CA1144274A (fr) 1978-07-31 1982-04-05 Methode et systeme de transmission de signaux de telecopie

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP92533/78 1978-07-31
JP53092533A JPS5923514B2 (ja) 1978-07-31 1978-07-31 二次元逐次符号化方式
JP15471678A JPS5927544B2 (ja) 1978-12-13 1978-12-13 フアクシミリ信号復号化装置
JP154716/78 1978-12-13
JP6030/79 1979-01-24
JP603079A JPS5599880A (en) 1979-01-24 1979-01-24 Coding system suitable for one and two dimension

Publications (1)

Publication Number Publication Date
CA1128645A true CA1128645A (fr) 1982-07-27

Family

ID=27276991

Family Applications (1)

Application Number Title Priority Date Filing Date
CA331,897A Expired CA1128645A (fr) 1978-07-31 1979-07-16 Methode et systeme de transmission de signaux de telecopie

Country Status (6)

Country Link
US (1) US4245257A (fr)
CA (1) CA1128645A (fr)
DE (1) DE2930903C2 (fr)
FR (1) FR2432807B1 (fr)
GB (1) GB2030425B (fr)
NL (1) NL192420C (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031423B2 (ja) * 1979-08-17 1985-07-22 富士通株式会社 圧縮デ−タ復元方式
US4511213A (en) * 1981-12-24 1985-04-16 Kokusai Denshin Denwa Kabushiki Kaisha Coding method for multilevel-gradated picture signal
IT1155650B (it) * 1982-03-19 1987-01-28 Olivetti & Co Spa Metodo ed apparecchiatura di compressione e decompressione di informazioni digitali di immagini
JPS5980063A (ja) * 1982-10-30 1984-05-09 Nec Corp フアクシミリの符号化回路
US4486784A (en) * 1982-12-27 1984-12-04 International Business Machines Corporation Image compression systems
JPS59126368A (ja) * 1983-01-10 1984-07-20 Hitachi Ltd 符号化復号化装置
JPS59231976A (ja) * 1983-06-15 1984-12-26 Ricoh Co Ltd デ−タ圧縮方式
JPS6019360A (ja) * 1983-07-12 1985-01-31 Nec Corp フアクシミリの復号化回路
US4558371A (en) * 1983-08-19 1985-12-10 Advanced Micro Devices, Inc. Method and device for two-dimensional facsimile coding
US4562484A (en) * 1983-08-19 1985-12-31 Advanced Micro Devices, Inc. Method and device for decoding two-dimensional facsimile signals
US4807043A (en) * 1987-03-24 1989-02-21 Advanced Micro Devices, Inc. Two-dimensional facsimile encoding apparatus with coding and reference line windowing means and color change detectors
US4839738A (en) * 1987-04-22 1989-06-13 Advanced Micro Devices, Inc. Apparatus for decoding facsimile coded data to image data with coding and reference line windowing and color change detection
US4918722A (en) * 1988-05-11 1990-04-17 Brooktrout Technology, Inc. Control of electronic information delivery
US7365884B2 (en) * 1988-09-22 2008-04-29 Catch Curve, Inc. Facsimile telecommunications system and method
US5459584A (en) 1988-09-22 1995-10-17 Audiofax, Inc. Facsimile telecommunications system and method
US4994926C1 (en) * 1988-09-22 2001-07-03 Audiofax Ip L L C Facsimile telecommunications system and method
US6785021B1 (en) 1988-09-22 2004-08-31 Audiofax, Ip, Llc Facsimile telecommunications system and method
DE4028927A1 (de) * 1990-08-07 1992-02-13 Dirr Josef Verfahren fuer die codierung und uebertragung von information, insbesondere von vorlagen und bildern und fuer das fernsehen
JP2790206B2 (ja) * 1990-09-14 1998-08-27 富士写真フイルム株式会社 フイルム画像入力装置
US5206734A (en) * 1990-12-24 1993-04-27 Xerox Corporation Look ahead for high speed CCITT decompressor
US7525691B2 (en) * 1991-02-12 2009-04-28 Catch Curve, Inc. Facsimile telecommunications system and method
NL9201415A (nl) * 1992-08-06 1994-03-01 Oce Nederland Bv Werkwijze en inrichting voor het coderen en decoderen van digitale beeldgegevens.
JP2595900B2 (ja) * 1994-05-24 1997-04-02 日本電気株式会社 ２値画像データの変化点座標検出装置
WO1997003516A1 (fr) * 1995-07-11 1997-01-30 Telefonaktiebolaget Lm Ericsson (Publ) Codage video
US6208761B1 (en) 1995-07-11 2001-03-27 Telefonaktiebolaget Lm Ericsson (Publ) Video coding
US5881142A (en) * 1995-07-18 1999-03-09 Jetstream Communications, Inc. Integrated communications control device for a small office configured for coupling within a scalable network
US6775413B1 (en) 2000-09-18 2004-08-10 Intel Corporation Techniques to implement one-dimensional compression
JP2003069649A (ja) * 2001-08-22 2003-03-07 Murata Mach Ltd ファクシミリサーバ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2253378C3 (de) * 1972-10-31 1981-02-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Anordnung zur Codierung von Faksimilesignalen
DE2253578C3 (de) * 1972-11-02 1982-03-18 Robert Bosch Gmbh, 7000 Stuttgart Überwachungseinrichtung für die Steuerung eines Stellmotors
US3830964A (en) * 1973-01-03 1974-08-20 Eg & G Inc Apparatus and method for transmitting a bandwidth compressed digital signal representation of a visible image
US3927251A (en) * 1973-05-18 1975-12-16 Rca Corp Method and apparatus for the detection and control of errors in two-dimensionally compressed image data
JPS587109B2 (ja) * 1974-09-09 1983-02-08 ケイディディ株式会社 フアクシミリシンゴウ ノ ジヨウホウヘンカガソアドレスフゴウカホウシキ
JPS51132015A (en) * 1974-12-23 1976-11-16 Fujitsu Ltd Picture signal encoding transmission system
JPS5255313A (en) * 1975-10-30 1977-05-06 Kokusai Denshin Denwa Co Ltd Facsimile signal coding system
JPS5818824B2 (ja) * 1975-11-07 1983-04-14 ケイディディ株式会社 フアクシミリシンゴウノ フゴウカホウシキ
JPS5290216A (en) * 1976-01-24 1977-07-29 Mita Industrial Co Ltd Picture signal band compressing method
JPS6043703B2 (ja) * 1976-02-27 1985-09-30 富士ゼロックス株式会社 ２値信号フアクシミリデ−タ圧縮方式
JPS5816667B2 (ja) * 1976-07-21 1983-04-01 ケイディディ株式会社 フアクシミリ信号のインタ−ライン符号化方式
CA1128646A (fr) * 1978-11-22 1982-07-27 Yasuhiro Yamazaki Methode de codage de signaux en fac-simile

Also Published As

Publication number Publication date
NL192420C (nl) 1997-07-04
NL7905654A (nl) 1980-02-04
FR2432807B1 (fr) 1986-09-05
DE2930903A1 (de) 1980-02-21
NL192420B (nl) 1997-03-03
DE2930903C2 (de) 1983-09-01
US4245257A (en) 1981-01-13
GB2030425B (en) 1982-11-03
FR2432807A1 (fr) 1980-02-29
GB2030425A (en) 1980-04-02

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Legal Events

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